package com.gnerv.battle.boot.module.base.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author Gnerv LiGen
 */
@Slf4j
@Configuration
public class BattleThreadPoolConfig {

    @Bean()
    public Executor struggleExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        //初始化的线程数
        executor.setCorePoolSize(10);
        //线程池最大的线程数
        executor.setMaxPoolSize(20);
        //用来缓冲执行任务的队列
        executor.setQueueCapacity(200);
        //当超过了核心线程出之外的线程在空闲时间到达之后会被销毁
        executor.setKeepAliveSeconds(60);
        //线程池名的前缀
        executor.setThreadNamePrefix("struggle-executor-");
        //线程池对拒绝任务的处理策略：这里采用了CallerRunsPolicy策略，当线程池没有处理能力的时候，该策略会直接在 execute 方法的调用线程中运行被拒绝的任务；如果执行程序已关闭，则会丢弃该任务
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //线程池关闭的时候等待所有任务都完成再继续销毁
        executor.setWaitForTasksToCompleteOnShutdown(true);
        //超过这个时候还没有销毁就强制销毁
        executor.setAwaitTerminationSeconds(60);
        return executor;
    }

}
